Improvement in the manufacture of boots and shoes



M. F. CHANDLER & P. WAIl.

Manufacture of Bnuts and Shoes.

Patented Dec. 24, 1872.`

M j.. A.

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i .Y UNITED STATES TENT GFFICE@ A DIOSES F. CHANDLER AND vPRESTON WARE, 0F BOSTON, BISSACHSETTS,

lMPRVEMENT IN THE MANUFACTURE 0F BOO-TS AND SHOES.

Specification forming part of Letters Patent No. 134,252, dated December 2li, 1872.

To all whom 'it may concern:` jection upon the outer side of the heel, while Be it known that we, MOSES F. CHANDLER and PRESTON WARE, both of Boston, in the county of Suifolk and State of Massachusetts, have invented a new and useful Improvement in the Manufacture of Boots and Shoes, of which the following is a speciiication:

The invention relates to the manufacture of boots and shoes; and it consists in imparting to a boot or shoe a protuberance upon the outer side of the counter, and a corresponding recession or groove within, produced by a projection or swell upon the outer side of the v heel of the last, which is also provided with a chamfered or beveled edge, as hereinafter set forth.

The difliculty that is sought to be overcome is the tendency in all shoes of the present pattern to cant 7 or run over,7 whereby the counter is forced out of the shape originally given, and the whole shape of the shoe twisted or destroyed. This difficulty we overcome by making the laston which the shoe is to be made of such a shape that the finished shoe will conform to the natural shape of the foot when the weight of the body is rested thereon.

If the human heel were of a simple oval or round form, the present last would be suitable, but while the inner side of the heel is rounded and nearly vertical, the outer side spreads or projects when the weight of the body is upon it. The os calais or heel-bone of the foot is of an irregular cuboidal form; the bottom or lower suface rough, uneven, and rounded, or convex from side to side.l The internal surface of this bone has a concavity for the passa-ge of the vessels, nerves, Sto., which are covered and cushioned by the-outer integurnent. The external surface of the heel-bone is broad, having a projection about its center known as the outer tuberosity. From the heel-bone at this point the abductor muse/le of the little toe arises by a broad attachment, and over all is a thick layer of granular fat and iutegument.

, Now, when the weight of the body rests upon the foot, the concave lower surface of the os calais is embedded in the surrounding tissue, and forces the tissue out in a ridge-or pro the weight does not displace the tissue lying in the concavity upon the inner side of the bone.

Having now set forth the end to be attained, I will proceed to describe the means employed v for that purpose, referring to the accompanying drawing forming part of this specification.

Figure l is a side View of a last embodying my invention. Fig. 2 is a vertical transverse section taken on the line a" a', Fig. 1 and Fig. 3 is a shoe made upon my improved last.

Like letters refer to like parts in the several figures.

The general form of the toc, instep, or sprin g, and the inner face of the heel is vthe same as in boots, shoes, and lasts as now constructed; but upon the outer face of the heel of the last we form a projection, a, about an inch below, upward, and about two and a halt' inches forward, and from one-fourth to about threeeighths of an inch in thickness. Un the drawing, Fig 1, this is illustrated by the lines 7c l, showin g the length of the projection, and h t' the height to which it extends upon the last. In Fig. 2 of the drawing, upon the cut face are the lines b b, c c, d d, e e, ff, and g g. The line b b is a vertical line following the center of a last, and also represents the direction in which the weight is transmitted. The line c c is intersected at its center by the line b; but at the point where d d is crossed that line is unequally divided, for at this point the last begins to swell or increase in size until the line j' f is crossed, which is the point of greatest diameter, when the swell terminates abruptly, the last being beveled or chamfered from j' to g. The difference between the distance on the line f f from the inner face of the last to the median line b, and ,from that point to the outer face ofthe last, Should be from onefourth to three-eighths of an inch in favor of the second measurement in a last of ordinary size.

The shoe made on the last above described will present a protuberfance uponthe outer side of the heel or counter, as shown at m, Fig. 43. The inner surface ofthe heel will show a groove or recess corresponding thereto,which will reeeive the projecting tissues of the heel, and the counter being relieved of the pressure which gives it the tendency to lean or run over,77 the form of the shoe will be preserved.

What I claim is- A shoe or boot having a protuberance upon the outer side ofthe counter, and u corresponding recess or groove Within, produced by a last 1 iis/1,25%

having a projection or swei'l, and u chamerfd edge upon the outer side of the heel, substantiaiiy as described.

MOSES F. CHANDLER. PRESTON WARE.

Witnesses:

ALBERT BULLARD,

DANIEL POTTER. 

